Phonograph repeating device



L. JAKUBOWSKY.

PHONOGRAPH REPEATING DEVICE.

APPLICATION FILED DEC. r0, 1920.

1,404,774, Patented Jan. 31, 1922.

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PHONOGRAPH REPEATING DEVICE.

APPLICATION FILED DEC. I0, 1920.

Patented Jan. 31, 1922.

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AZkMWM$Y ZZ9/a/7 NITED. STATES PATENT] OFFICE.

LUGIAN JAKUBOWSKY, OF DEXTER, NEW YORK.

rnonoeearn anrnarme nnvrcn Specification of Letters Patent.

Patented an. 31, 1922.

Application filed December 10, 1920. Serial No. 429,697. v

Toallwlwm it may concern:

Be it known that I, LUcIAN JAKUBowsKr, a citizen of Poland, residing at Dexter, in

the county of Jefferson and State of New i may be p ayed repeatedly without intermission and without any manipulation on. the part of the operator.

The above and other objects will become apparent in the description below, in which like-named characters refer to like-named parts in the drawings.

Referring briefly to the drawings, Fig. 1 is a side elevational view of a conventional type of phonograph, .showing the application of the invention, the casing being in section.

Fig. 2 is a similar view showing certain of the parts in another position.

Fig. 3 is an enlarged cross-sectional View, shown fragmentarily, taken on the line- 3--3 I of Fig. 1..

Fig. 4 is a plan view of the phonograph.

Fig. 5 is a side elevational view of the parts shown in Fig. 3.

Referring now in detail to the drawin s, the numeral 1 represents the frame of t e phonograph, and 2 the usual record carrying disk mounted upon a shaft 3 driven in the usual manner by a spring motor 5, the connection between the motor and shaft not being shown for the sake of simplicity. Brackets 4 support said motor, and the winding mechanism thereof is shown conventionally by the circular rack 6, pinion 7 and handle 8. The driving gear 9 of said motor is in mesh with a pinion 10 which is also provided with'bevel. gear teeth which are in mesh with a bevel gear 11, the latter being rigid upon a shaft 12 supported in vertical brackets 13.

A cylindrical support 14 rests vertically upon the upper surface of the frame, 1, the

support having a circular opening on one side through which a sound conduit 20 com municates, the support being closed at its base by the frame and open at the top. A tube 15 is slidably mounted within the support 14, and is closed at its bottom by a cover 18 rigid with the upper end Of 1a! Yel means of which a single record tical rod 21. The tube 15 is provided with i a plurahty of openings 19 adapted to register with the circular opening leading to the conduit 20, so as to allow the passage of W sound from the tube 15 into the conduit regardless of the position of the tube.

The vertical rod 21 extends downward to the base of the frame 1, and, as shown in Fig. 5, a disk-like cam plate 22 is integral with the rod. A guide pin 35 extends upward from the-base of the frame, the plate and the end of therod, being bored to receive it. A compression spring 34 surrounds the pin and presses the plate normally alpwardfiie The cam plate has onits surface a pair of oppositely disposed, raised cam elements 23, each being of a length corresponding to the are that corresponds with the radial distance from the beginning to the end of the record grooves. The plate 22 and rod 21, as is obvious, are rotatably and slidably mounted upon the pin 21.

Oppositely disposed uprights .32 are mounted upon the base of the frame, and so rollers 33 are rotatably mounted in the uprights in contact with the cam plate, such contact being maintained by the spring 34. A sleeve 24 is slidably mounted upon the rod 21 and isv rotatably engaged within a s5 horizontal arm 30 attached to the lower end of a vertical rod 27 supported in brackets 28. The rod 27 extends through the top of the frame, and a button 31 at its upper vj end. A light spring 29 surrounds thelee' lower end of the rod 27 and presses the arm 30 downward carrying with it the sleeve 24 and its attached parts. A bevel gear 25 is rigid with the upper end of the sleeve 24, and

is in mesh with another bevel gear 26 rigid upon the end of the shaft 12.

The tube 15 is surmounted by a double tone arm 16 having sound boxes 17 and 17 on the ends thereof. Thus the sound from either sound box is conveyed down the tube 1 15, from whence the conduit 20 leads into the horn 36.

The operation of the device may now be described. While a record is being played,

the various parts are in the positions shown 1085 in Fig. 2, the cam elements 23 being depressed by contact with the rollers 33, against the force of the sprmg 34. When the needle of the sound box 17 in contact with the record reaches the end of the record no groove, the plate 22 will have rotated Suficiently to clear the l'OllQI'S 33 of the cams 23, whereupon the force ofthe spring 34 will cause the plate 22 and rod 21. to rise, thus bring the gear 25 into engagement with the gear 26. The gears being in mesh, the rod 21 will be rotated, swinging the arm 16 so that the sound box 17 will move away from the record and the opposite sound box 17 will approach the record. As soon as the sound box 17 is in position above the record to contact with the same at the beginning of the record grooves, the cams 23 will again contact with the rollers 33 and thus cause the plate 22, and rod 27, to descend, allowing the sound box to contact with therecord, and disengaging the gears 25 and 26. Thus the playing-of the record will be repeated, and this cycle of events may be continued at the will of the player.

I have made further provision for the event that the player desires to hear only a certain portion of the record repeatedly. After the record has been playing a while, and the player wishes to hear only that first part of the record, he may lift the button 31 until the gears 25 and 26 engage, whereupon the tone arm 16 will begin to swing about. When the sound box 17 comes into position at the beginning of the record, the button is to be released.

I claim:

1. In a phonograph repeating device, the combination with a casing, and a motor contained therein, of a gear actuated by said motor, a tone arm having two opposite" said tone arm, a face cam fixed on the end of said support rod, rollers on fixed pivots engaging with' said cam, means normally urging said cam into a raised position, a

gear carried on said support rod engageable with said first-named gear, said cam being adapted to cause engagement of said gears when one of said sound boxes has reached the end of the record groove being played, said cam being also adapted to release said engagement when the other of said sound boxes is in position above the beginning of the record groove.

2. In a phonograph repeating device, the combination with a casing, a motor mounted therein, a record rotated by said motor, a tone arm and a sound box at each of the endsthereof, of a rod rotatably and slidably mounted in said casing, said tone arm being engaged at the upper end of said rod, means for resiliently urging said tone arm' into raised position, a cam adapted to depress said tone arm at the beginning of a record groove, means for raising said tone arm at the completion of said record oove, and means operated by said motor r rotating said rod so. as to rotate said tone arm to brlng said sound box into engagement with the said record at the beginning of the record groove. 7

In witness whereof I afiix my si ature.- LUOIAN JAKUBO KY. 

